MR12 or U4.4?

This is a discussion about MR12 or U4.4? within the Tuning Performance section, where you will Engine mods-Tuning talk
for all Sport Bikes
Every little bit helps!; Looked on here couldn't find a answer. What fuel makes better power ? Money isn't a problem to put it up front as far as the difference in price on the two.
Set up would

MR12 or U4.4?

Looked on here couldn't find a answer. What fuel makes better power ? Money isn't a problem to put it up front as far as the difference in price on the two.
Set up would be n/a motor, ported and decked head, thinned head gasket, with cams. So what fuel is best for this set up? Bike will be dyno tuned. Thanks in advance

if runnin stock bottom end as sounds like from listed work done
mr12 will be best power at 87 oct,
for a faster burn for the less comp motor
mr12 same oxy content but higher 98 oct
u4 even more oct,,less oxy

if runnin stock bottom end as sounds like from listed work done
mr12 will be best power at 87 oct,
for a faster burn for the less comp motor
mr12 same oxy content but higher 98 oct
u4 even more oct,,less oxy

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